Manual

Pinouts for DB9 Connectors 5

Building Custom Cables

* All RS-232 signals are present in RS-422 mode.

Pinouts for DB9 Connectors

Use the following table and figure for pinout information for the DB9

connectors on the Quad/Octacable.

DTR

Not used*

21 through 24 Not used Not used

25 Not used TxD-

Table 2. DB9 Connector Pinouts

Pin RS-232 Signal

1 CD

2 RxD

3 TxD

DTR

5 Signal ground

DSR

7 RTS

CTS

9 Not used

Table 1. DB25 Connector Pinouts (Continued)

Pin RS-232 Signal RS-422 Signal

Pin 13 Pin 1

Pin 25 Pin 14

DB25 Female

Pin 14 Pin 25

Pin 1 Pin 13

DB25 Male

Pin 1

Pin5

Pin 6

Pin 9

DB9 Male